Factor로 Security를 고려해야만 하는 상황이 되었다. 하지만 고객들의 요구에 맞추기 위해서 빠른 개발과 비용을 이유로 보안에 취약한 메신저 프로그램이 만들어지고 있다. 메신저 서비스는 전화와 같은 프라이버시가 편리함 이전에 반드시 지켜져야 할 필수적인 조건이다. 기사에서처럼 Attack에 Vulnerable
1. Multifactor Models : An Overview
Factor Models of Security Returns
ri = E(ri) + Ui
= E(ri) + mi + ei
r : 실현된 수익률 (Announcement)
E(r) : 예상하였던 기대수익률 (Expected part)
U : 예상하지 못했던 부분 (Surprise)
m : 체계적 위험 (Systematic Risk)
e : 비체계적 위험 (Unsystematic Risk)
Factor Models of Security Returns
[ single-factor model ]
security officers and operations personnel, and assessments should include information on the severity of any deficiency and how it relates to airport security as a whole. In particular, efforts should be made to determine whether unsatisfactory conditions reflect individuals' carelessness or the existence of systematic problems. Only in this way, by employing an analytical approach, can a securi
security is based both on the difficulty of finding the secret key from the public key and the difficulty of determining the plaintext from the cryptogram. At present, the most common public-key cryptosystem is the RSA algorithm. The RSA cryptosystem is related to the difficulty of factoring large numbers. But it is conceivable that an entirely different way to break RSA can be discovered.(perhap
young age (15~24).
c. Race
According to Yonhap News ( Aug, 5th, 2009), it was investigated that foreign people in Korea was over 1,000,000. Ministry of Public Administration and Security made it known that the number of foreigners who live in Korea was 1,106,884 at May, 2010. It has captured 2.2% of total Korean members(49,593,665). Moreover this figure increased 23%, comparing last year.